Police officers have released these images of a man they want to speak to in connection with a sexual assault on the Tube.
Detectives from the British Transport Police were called after a woman was sexually assaulted by a man on a Central Line train between Greenford and Perivale at about 11:37pm on August 8.
Officers believe the man in the CCTV images may have information that could help their investigation.
Anyone who recognises him or has any other information, is asked to contact British Transport Police by texting 61016 or by calling 0800 40 50 40 quoting reference 827 of 08/08/24.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.
